Need help with the eccentric pulley (tensioner pulley)! Cannot understand how it works!! PICS PICS

Need help with the eccentric pulley (tensioner pulley)! Cannot understand how it works!! PICS PICS

Hey. Sami here. I am in the middle of my timing belt job on my 2002 Audi A4 1.8TQM...Car has the AMB motor just to let you all know. All I need help with is how to set the tension and how the damn eccentric pulley (tensioner pulley) works and how I set it up. If possible can you give me all the steps to do the timing belt job! (I am already following the b5 writeup and its only good for so much!)

Look at the following pics and tell me what you think (keep in mind everypart is brand new! Thanks PUREMS!) **hopefully the pics work***

When I did mine, I had to recompress the piston and readjust the pulley about 6-7 times before I got it right. It is time consuming because it is hard to predict where the pulley will end up when you release the piston. Basically what I did was release the piston, take the measurements, recompress the piston, readjust the pulley, release the piston, etc... until I got the gap right. Good luck

That tool is used to engage the holes in the pulley hub to rotate the hub...

to adjust the gap shown. A tool to do the same thing can be made from a 1 ft length of 1/2" X 1/8" flat bar stock, with holes drilled into it on one end, with the hole spacing the same as the hole spacing in the pulley hub. Then use a couple of machine screws through the holes with nuts to tighten the machine screws into the holes in the end of the bar stock. The machine screws must fit into the pulley holes, and be long enough to reach past the pulley nut so that another wrench can be used to tighten the pulley nut while holding the pulley hub in position with the special tool.

The picture no longer appears to be active. I have a 2001 1.8T avant with the same tensioner assembly. The Haynes manual only shows the old configuration. I didn't get a chance to borrow my brother's Bently manual yet. I have everything disassembled. Does anybody have any dimensional details?

they sell the tensioner tool on ecs for $20. when i did my b5 years ago my buddy had one for his mkIV vw which worked fine for me. i laced up the belt loosened the bolt and gave it enough pressure on the tool so i could turn the belt about 90 degrees, then tightened. good luck